Coupling for pipes and tubes.



No. 821,564. PATENTBD MAY 22, 1905.

H. 3. WEEKS 5; M. KLAIBBR. COUPLING-FOR PIPES AND TUBES.

APPLIO ATIOH FILED SEPT. 13.1905.

UNITED sTA rns PATENT OFFICE.

l-IERBERI J. WILKS ANl) MAXIMiLIAN KLAIBER, OF NEW YORK, ASSIGNORS TO MODERN IMPROVEMENTS MFG. 00., OF BROOKLYN,

NEW YORK, A CORPORATlOhl 6F NEW YORK.

Specification of Letters Patent.

Patented May 22, 1906.

Application filed September 13. 190B. aerial No. 273,224.

'1?) all whom it may concern:

Be it known that We, HERBERT J. WILKS end MAXLMILIAN KLAIBER, citizens of the United States, residing at the borough of Brooklyn, in the county of Kings, city and State of New York, have invented an Improvement in Couplings for Pipes and Tubes, of which the following is a specification.

Our-invention relates to devices or connecting the meeting ends of pi es and tubes, especially such lend pipes or end andjron pipes as are used in the plumbing art.

As is well known in this art, the usual manner ofconnectin the adjacent ends, especially of lead pipe, is y a wiped or soldered joint. This joint is clumsy, expensive, ,snd more or less unsightly. Metal coupling devices have heretofore [been employed for connecting the meeting ends of pipes, the same comprisin a thimble with a conical end to pass into is c spread end of a pipe anda nut surrounding the pipe' and screwin upon the thimble. Sometimes thethimb c has been double ended to pass into the adjacent spreads ends of the pipes to be connected, and two nuts have been emplo edscrewin u on the surface, of the thirnb e outside 0' t e ends of. the pipe; but in these cases the movable mcmber that is, the nut-had the larger besring-surface and as the same was routed to clamp the pipe tightly to the thinlble the tendency of'the larger movable area was to twist the were thus very bu ject of our invention is to rovides metal coupliliglg forthe adjacent on s of pipes where this 6' culty shall not be present.

In the device of our invention the conical surface of the thimble to enter the flared end of the pip'egisroughened, so asto grip the pipe and revent the some being turned around the t 'mble by the turning of the nut. In toughening this surface We preferto longitudinslly or axially score the surface, so as to reduce alternate ribs and grooves in the orm of teeth and to also form two circumfer-antic] coves intersecting these longitudinslteet 'and grooves, the circumferential grooves being formed to the base of the other grooves, and we also refer to olish the inner surface of the nuts W ere they ear against the flared outer surface of the pipe. This polishipe, and fro uentl pipes "and 3 the circumferential coves cut therein twisted ,mtihhig the omt w not only unsightly, ut unreliable; and the ,ob-

ing of the inner surface permits the nut to turn freely over the surface, and the scoring and grooving of the surface of the to ering end of the thimble causes the lead oft epipes to be forced into both the axial or longitudinal grooves and the circumferential grooves not only to prevent the pipe slipping, but to mm (in aliquidi ht joint. V

In the rowings, Figure 1 is an elevation representing the device of our 1m rovemcnt Fig. 2 is e-lcn itudinsl section 0 the some Fig. 3 is an e ovation of the thimble clone, Fig. 4 is a. transverse section at a: a: of Fig. 2 in larger size, and Fi 5 is a longitudinal section illustrating e 1110 died form of theinvention.

Referring now to Figs. 1 to 4 inclusive, at are the two ,sdjacent ends of lend pipe which are to be connected by the metalcou 1 These are provided with flaring on s lin c" Whichare made in the well knownzuannor in this art by, a tool inserted 1n the end of the pi e. Before the flarin is done, how ever, t e metal nuts 0 d are s pped over the ends of the pipes. After the ends are flsrsd the thimble .9, with taperin or beveled ends, is passed into the flared on s of the pipes and the nuts 0 d brought up to osition'.

Referring to Fig. 3, whic shows the thimhi6 e alone, e represents thefrusto-conical or beveled ends; a, the threaded cylindrical peripheries. '2 represents the longitudinal and axial teeth and grooves of the conical ends 42, 35

preferably tothebese of t e [coves between i the teeth or ribs 2. As t e nuts 0 d' are screwed to jllace the lead of the ends ofthe 'ipes is not onlyforccd intc the grooves beween the ribs or teeth Egbnt is also forced into the circumferential doves 3, the inner surfaces of the nuts 0 d, eiii-ing against the ends of the pipes a I), being referebly polished. Because theJesd is orced into the 5 irregular surfscesof the ends'of the thhnble, causing the inner surface -of the lead pipe to have a reverse configuration to the ends ofthe'thimble, an interlocked condition is established, which prevents the turning or twistzoo ing of the lead pipe by the sleeves or nuts c d as they are screwed to lplace, thus preserving the continuity 'of so see of the lead pipe without distortion. Furthermore, the annular grooves 3 in the tapering ends of the 10-5 thimble ion-n ribs of the soft inetal of the lead Rik pipe forced into them, which make a liquidlight joint so light that experiment has proved it tohrimpos 'llofortheliquid under any rwsonahl s HIPQMU'G to be Forced by said ports.

Fig. 3, illustrating n modified form of our invention, M-rn the connection of one end of a iesd pipe to one enl of on iron pipe, (1 repres nting tin; lend "pe, and f the iron pipe, which iron pipe i:- needed at its end to screw into an interior-l,-threaded ortion of the sleeve 9, the sleeve y, us a thim le, at one end hoing tapered nl 5 liereinbcfore described with reference to the thimble e, and else provided with ribs '3 and. intervening grooves and the cireuisisrcn iel grooves 2) to pass into the flarell end of the loud pipe, the nut 0 screwing on o Uio'sleeve g and binding the lead pipe to thas] in :1 manner similar to that hereinbefore ii i'iifll with. reference to the parts, Figs. '1. o 4, inclusive.

1. in a coupling, the iuinlliflfillflll with a thinihle and means for eonnwting thereto a pipe at one end, of a tapering or beveled end to said thimble, the surface of which is provided with axial or longitudinal teeth and grooves to he passed into the adjacent flared end of the pipe'to be connected, and a sleeve or nut surrounding the end of the latter pi e and screwing upon the surface of; the lhinib e.

in s coupling, the combination with a, thinible and neans for connecting thereto a, pipe at one end, of a tapering or beveled end to said thinible, the surface of which is provided with axial or longitudinal teeth and grooves, and circumferential grooves intersecting the longitudinal teeth and ooves, to he passed into the adjacent flare end of the pipe to, be connected, and a sleeve or nut surrounding the end of the latter pi e and screwing upon the surface of the thimhle.

3. in a coupling, the combination with adjacent flared ends of pipes to be connected, of a thimble having ta ering, or beveled ends to ass into said flarer ends, said thimble havmg screw-threaded exterior ortions and the tapering or'lieveled ends wit longitudinal or axial teeth and grooves, and sleeves or nuts surrounding the flared ends of said pipes and screwing upon the threaded surfaces of said thimhle in connecting the parts.

4. in a coupling, the combination with adjaeent llared ends of pipes to be connected, of a thimble having ta iering or beveled ends to use into said hirer ends, said thimble having screw-threaded exterior ortions and the tapering or beveled ends witii longitudinal or axial teeth and grooves, and circumferent al grooves intersecting the longitudinal teath and the moves, and sleeves or nuts surrounding the ared ends of said pipes and screwing upon the threaded surfaces of said thimble in connecting the parts.

Signed by us this 28th da of Au ust,1905.

HERBERT-1 WIL S.

MAXIMILIAN KLAIBER. Witnesses:

A. H. SEnBELL, SR1. HAVILAND.

l l l l l l g l l i l 

